The correct options are
A The hydration energy of sodium sulphate is more than its lattice energy
B The lattice energy of Barium sulphate is more than its hydration energy
BaSO4 is sparingly soluble in water because its hydration energy is lesser than the lattice energy. Thus, ions are not separated from each other. On the contrary, in Na2SO4, the hydration energy is more than its lattice energy. Thus, ions are separated from each other and pass in solution state.